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Russell AS, Percy JS.Russell AS, et al. Among authors: percy js.Lancet. 1972 Nov 4;2(7784):978. doi: 10.1016/s0140-6736(72)92513-5.Lancet. 1972.PMID: 4116863No abstract available.
Percy J, Russell AS.Percy J, et al.Br Med J. 1973 Nov 3;4(5887):300. doi: 10.1136/bmj.4.5887.300-b.Br Med J. 1973.PMID: 4753259Free PMC article.No abstract available.